Files in this Data Supplement:

• Supplemental file 1 - Primers used for bar-coded mass parallel sequencing (Table S1).
  MS Word document, 56K.
• Supplemental file 2 - Summary of sequences assigned to operational taxonomic units for each sampling site (Table S2).
  MS Word document, 49K.
• Supplemental file 3 - 391 operational taxonomic units identified in the data set, along with their abundances in White Creek and Rabbit Creek as well as inferred taxonomic identification (Table S3).
  MS Excel file, 367K.
• Supplemental file 4 - Rarefaction analyses for community samples from White Creek and Rabbit Creek (Fig. S1).
  MS PowerPoint file, 339K.
• Supplemental file 5 - Representative mosaic plots of community similarity within sampling locations (Fig. S2).
  Zipped PDF file, 432K.
• Supplemental file 6 - Additional measures of diversity that demonstrate that community diversity decreases with increasing temperature (Fig. S3).
  MS PowerPoint file, 104K.
• Supplemental file 7 - Sequence alignments showing the distinct and abundant Synechococcus and Chloroflexi operational taxonomic units sampled (Fig. S4).
  MS PowerPoint file, 87K.
• Supplemental file 8 - Legends to Fig. S1 to S4.
  MS Word document, 25K.